A new Teams feature is the ability to take Meeting Notes: A single shared note-taking space that lives inside a Teams meeting can be used to track agendas, decisions, and assign action items.
Once you’re in the meeting, go to More options > Show meeting notes in your meeting controls. If you have not taken any notes yet, select Start taking meeting notes.
Otherwise, start typing your notes. Use the controls at the top of the panel to format and lay out the text. To add a new note, select Add a new section here. Use @mentions to draw someone’s attention to a specific note or assign an action item.
In a recurring meeting, the notes persist from meeting to meeting. Each meeting becomes a new section in the notes.
There are some other features and limits of these meeting notes, for a full description see this link: https://support.microsoft.com/en-gb/office/take-meeting-notes-in-teams-3eadf032-0ef8-4d60-9e21-0691d317d103